Home / 68,083.76-102,126.40-20,706.57

Finding the Fourth Proportional to 68,083.76, 102,126.40 and 20,706.57

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Solution

The fourth proportional to 68,083.76, 102,126.40 and 20,706.57 is: 31,060.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,083.76 : 102,126.40 = 20,706.57 : x
  2. Step 2: Convert to fraction form
    68,083.76/102,126.40 = 20,706.57/x
  3. Step 3: Cross multiply
    68,083.76x = 102,126.40 × 20,706.57
  4. Step 4: Simplify right side
    68,083.76x = 2,114,687,398.68
  5. Step 5: Solve for x
    x = 2,114,687,398.68/68,083.76
  6. Step 6: Final answer
    x = 31,060.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.